Water inlet valve

Abstract

The water inlet valve comprises a valve body, the valve body comprises a water inlet, a plate exchange lower connector, a plate exchange upper connector, a water pump connector and a first installation cavity, a flow assembly is installed in the first installation cavity and comprises a water outlet, a water outlet channel is arranged in the valve body, and the water outlet channel is communicated with the water outlet and the plate exchange lower connector. The water inlet, the first installation cavity, the flow assembly, the water outlet channel and the plate heat exchanger lower connector form a water inlet waterway, the plate heat exchanger upper connector communicates with the water pump connector, and the plate heat exchanger upper connector and the water pump connector form a water outlet waterway. According to the utility model, the water outlet channel is arranged in the valve body, so that normal-temperature water enters the flow component in the valve body from the water inlet and then flows into the lower interface of the plate heat exchanger from the water outlet channel, thereby being suitable for the parallel heat exchange plate heat exchanger.

Description

Technical Field

[0001] The utility model relates to the technical field of the water outlet module of a wall-mounted boiler, and more specifically, to a water inlet valve. Background Art

[0002] The plate heat exchanger adopted by the current wall-mounted boiler is a cross-flow heat exchanger. When cross-flow heat exchange is adopted, the water inlet circuit is that the normal temperature water enters from the lower inlet of the water inlet valve, passes through the flow component and then enters the plate heat exchanger from the upper interface of the plate heat exchanger. The water outlet circuit is that the hot water after heat exchange in the plate heat exchanger flows into the water inlet valve from the lower interface of the plate heat exchanger and flows out from the water pump interface. However, the plate heat exchanger also includes a parallel heat exchange plate heat exchanger, and the current water inlet valve cannot be applied to the parallel heat exchange plate heat exchanger. Therefore, it is urgent to improve this situation. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and provide a water inlet valve. By arranging a water outlet channel inside the valve body, the normal temperature water enters the flow component in the valve body from the water inlet, and then flows into the lower interface of the plate heat exchanger through the water outlet channel, so as to be applicable to the parallel heat exchange plate heat exchanger.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a water inlet valve, which comprises a valve body. The valve body includes a water inlet, a lower interface of the plate heat exchanger, an upper interface of the plate heat exchanger, a water pump interface and a first installation cavity. The characteristics are that a flow component is installed in the first installation cavity. The flow component includes a water outlet. A water outlet channel is arranged inside the valve body. The water outlet channel is respectively communicated with the water outlet and the lower interface of the plate heat exchanger. The water inlet, the first installation cavity, the flow component, the water outlet channel and the lower interface of the plate heat exchanger form a water inlet circuit. The upper interface of the plate heat exchanger is communicated with the water pump interface. The upper interface of the plate heat exchanger and the water pump interface form a water outlet circuit.

[0006] Further, the water outlet channel is inclined. The upper end of the water outlet channel is communicated with the water outlet, and the lower end is communicated with the lower interface of the plate heat exchanger.

[0007] Further, the flow component includes a housing. A filter screen is arranged at the lower part of the housing. The water outlet is located on the side of the housing and is higher than the filter screen. The side wall of the housing is in sealing cooperation with the side wall of the first installation cavity. The water outlet is communicated with the water inlet through the filter screen.

[0008] Further, a fixing base is installed at the lower part of the housing. The filter screen is fixed to the lower part of the fixing base. A current-limiting outer shell is installed inside the fixing base, and a current-limiting ring is installed inside the current-limiting outer shell. An impeller assembly is installed inside the housing. The impeller assembly can rotate. The impeller assembly is located above the fixing base. A sensor assembly is clamped to the outside of the housing. The sensor assembly is located outside the valve body. The water inlet passage passes through the filter screen of the flow component and then passes through the current-limiting ring, the impeller assembly, and the water outlet in sequence.

[0009] Further, a limiting hole is provided on the side of the housing, and a bump corresponding to the limiting hole is provided on the side of the fixing base. The upper part of the fixing base is inserted into the housing, and the bump is inserted into the corresponding limiting hole for limiting. A plurality of buckles are provided on the upper part of the filter screen, and a notch corresponding to the buckle is provided on the side of the fixing base. The buckle is inserted into the notch for limiting. An annular rib is provided inside the fixing base, the upper part of the current-limiting outer shell abuts against the lower part of the annular rib, and the side surface of the current-limiting ring is tightly fitted with the inner wall of the current-limiting outer shell.

[0010] Further, a water inlet joint is installed in the water inlet. The water inlet joint includes a connecting head, and a plug is provided on the upper part of the connecting head. The plug is inserted into the water inlet for fixation, and the plug and the connecting head are eccentrically arranged.

[0011] Further, an inclined hole is provided in the plug, and the lower end of the inclined hole is inclined towards the central axis of the connecting head.

[0012] Further, an installation groove is provided at the lower end of the water inlet. A plurality of protrusions are provided on the inner wall of the installation groove. A flat gasket is provided at the lower part of the plug. A limiting groove corresponding to the protrusion is provided on the side surface of the flat gasket. The flat gasket is inserted into the installation groove and the upper part of the flat gasket abuts against the end surface of the installation groove, and the protrusion is inserted into the corresponding limiting groove.

[0013] Further, the valve body includes a first water passage, a second water passage, and a water replenishing passage. The first water passage is communicated with the first installation cavity, the second water passage is communicated with the water replenishing passage, the water replenishing passage is communicated with the water pump interface, and the first water passage and the second water passage are communicated or blocked by a valve rod.

[0014] Further, the valve body further includes a sealing cavity, a second installation cavity, and a temperature interface. The valve rod is installed in the second installation cavity. A boss is provided at the upper end of the valve rod. The valve rod can move up and down so that the boss can be inserted into or separated from the sealing cavity. A sealing ring is sleeved on the side surface of the boss. The boss and the side wall of the sealing cavity are sealed by the sealing ring. When the boss is inserted into the sealing cavity, the first water passage and the second water passage are blocked. When the boss is separated from the sealing cavity, the first water passage and the second water passage are communicated. A temperature sensor is installed in the temperature interface.

[0015] The beneficial effects of the present utility model are:

[0016] 1. By arranging a water outlet channel inside the valve body, the normal temperature water flowing out from the interface of the flow component near the plate replacement can flow out through the water outlet channel at the interface of the plate replacement, so that the utility model is applicable to a parallel heat exchange plate heat exchanger.

[0017] 2. By eccentrically arranging the plug and the connector, during installation, the position of the connector can be adjusted by rotating the water inlet joint, so as to meet the installation requirements in different environments. By arranging the inclined hole, the opening size at the connection of the plug and the connector can be effectively guaranteed, so as to meet the demand of the water inlet flux. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of this embodiment;

[0019] Figure 2 is a cross-sectional view of this embodiment;

[0020] Figure 3 is Figure 2 an enlarged view at A;

[0021] Figure 4 is a cross-sectional view of this embodiment;

[0022] Figure 5 is a schematic structural diagram of the flow component;

[0023] Figure 6 is an exploded view of the flow component;

[0024] Figure 7 is a bottom view of this embodiment.

[0025] Reference numerals: 1. Valve body; 101. Water inlet; 102. Interface of plate replacement; 103. Interface of plate replacement above; 104. Water pump interface; 105. First installation cavity; 106. Water outlet channel; 107. First water passing channel; 108. Second water passing channel; 109. Make-up water channel; 110. Sealing cavity; 111. Second installation cavity; 112. Temperature interface; 113. Installation groove; 114. Protrusion; 2. Shell; 21. Water outlet; 22. Sensor assembly; 23. Limiting hole; 3. Fixed seat; 31. Notch; 32. Convex point; 33. Annular rib; 4. Filter screen; 41. Buckle; 5. Flow limiting outer shell; 6. Flow limiting ring; 7. Impeller assembly; 8. Water inlet joint; 81. Connector; 82. Flat gasket; 83. Plug; 84. Inclined hole; 85. Limiting groove; 9. Valve rod; 91. Convex platform; 92. Sealing ring; 10. Temperature sensor. DETAILED DESCRIPTION OF THE EMBODIMENT

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] As Figures 1 to 7 shown, a water inlet valve includes a valve body 1. The valve body 1 includes a water inlet 101, a plate heat exchanger lower interface 102, a plate heat exchanger upper interface 103, a water pump interface 104, and a first installation cavity 105. A water pump can be connected to the water pump interface 104. A flow component is installed in the first installation cavity 105. The flow component includes a water outlet 21. An outlet channel 106 is provided inside the valve body 1. The outlet channel 106 communicates with the water outlet 21 and the plate heat exchanger lower interface 102 respectively. The outlet channel 106 is inclined. The upper end of the outlet channel 106 communicates with the water outlet 21 and the lower end communicates with the plate heat exchanger lower interface 102. The water inlet 101, the first installation cavity 105, the flow component, the outlet channel 106, and the plate heat exchanger lower interface 102 form a water inlet water path. The plate heat exchanger upper interface 103 and the water pump interface 104 are in communication, and the plate heat exchanger upper interface 103 and the water pump interface 104 form a water outlet water path.

[0028] When in use, normal temperature water enters the first installation cavity 105 inside the valve body 1 from the water inlet 101, flows into the outlet channel 106 from the water outlet 21 after passing through the flow component. The normal temperature water flows obliquely downward in the outlet channel 106 into the plate heat exchanger lower interface 102, and enters the plate heat exchanger (not shown in the figure) from the plate heat exchanger lower interface 102, forming a water inlet water path. At the same time, the circulating water in the wall-mounted boiler system (not shown in the figure) is heated, passes through the plate heat exchanger, exchanges heat with the normal temperature water entering the plate heat exchanger, enters the valve body 1 from the plate heat exchanger upper interface 103, and is pumped out from the water pump interface 104 under the drive of a water pump (not shown in the figure), and then re-enters the main heat exchanger for heating circulation.

[0029] Thus, by providing the outlet channel 106 inside the valve body 1, the normal temperature water flowing out of the flow component near the plate heat exchanger upper interface 103 can flow out through the outlet channel 106 at the plate heat exchanger lower interface 102, so that the present utility model is applicable to a parallel heat exchange plate heat exchanger.

[0030] As Figure 2 and Figure 3As shown, the flow component includes a housing 2. A filter screen 4 is provided at the lower part of the housing 2. The water outlet 21 is located on the side of the housing 2 and is higher in position than the filter screen 4. The side wall of the housing 2 and the side wall of the first installation cavity 105 are sealed and fitted through a seal. The water outlet 21 and the water inlet 101 are communicated through the filter screen 4. That is, through the seal, the first installation cavity 105 can be isolated into a cavity communicated with the water outlet 21 and a cavity communicated with the filter screen 4, so that the normal temperature water entering the flow component needs to enter from the filter screen 4 and exit from the water outlet 21. By providing the filter screen 4, a filtering function can be achieved.

[0031] As Figure 2 , Figure 3 , Figure 5 and Figure 6 shown, a fixing seat 3 is installed at the lower part of the housing 2. A limiting hole 23 is provided on the side of the housing 2. A bump 32 corresponding to the limiting hole 23 is provided on the side of the fixing seat 3. The upper part of the fixing seat 3 is inserted into the housing 2, and the bump 32 is inserted into the corresponding limiting hole 23 for limiting. Through the cooperation of the bump 32 and the limiting hole 23, the fixing of the housing 2 and the fixing seat 3 is realized. The filter screen 4 is fixed at the lower part of the fixing seat 3. A plurality of buckles 41 are provided at the upper part of the filter screen 4. A notch 31 corresponding to the buckle 41 is provided on the side of the fixing seat 3. The buckle 41 is inserted into the notch 31 for limiting. Through the cooperation of the buckle 41 and the notch 31, the detachable design of the filter screen 4 and the fixing seat 3 is realized, so as to facilitate the replacement of the filter screen 4. A flow limiting outer shell 5 is installed inside the fixing seat 3. A flow limiting ring 6 is installed inside the flow limiting outer shell 5. An annular rib 33 is provided inside the fixing seat 3. The upper part of the flow limiting outer shell 5 abuts against the lower part of the annular rib 33. The side of the flow limiting ring 6 is tightly fitted with the inner wall of the flow limiting outer shell 5. The flow limiting outer shell 5 and the flow limiting ring 6 can form a flow limiting device, so as to control the water inlet flow rate and maintain the stability of the water inlet flow rate. Among them, the flow limiting outer shell 5 and the flow limiting ring 6 are prior arts, and the technology for controlling the water inlet flow rate through the flow limiting outer shell 5 and the flow limiting ring 6 is also a prior art. Therefore, their specific structures and principles are not described in detail in this specification.

[0032] An impeller assembly 7 is installed inside the housing 2. The impeller assembly 7 can rotate. The impeller assembly 7 is located above the fixing seat 3. A sensor assembly 22 is snap-fitted outside the housing 2. The sensor assembly 22 is located outside the valve body 1. The water inlet path passes through the filter screen 4 of the flow component and then passes through the flow limiting ring 6, the impeller assembly 7 and the water outlet 21 in sequence.

[0033] The working principle of the flow component is as follows: The normal temperature water impacts the impeller assembly 7 after passing through the filter screen 4 and the flow limiting device, thereby driving the magnetic ring of the flow component to rotate. The sensor assembly 22 senses the speed of the magnetic pole change and outputs a corresponding frequency signal to the circuit board for controlling the gas flow rate of the gas valve. The working principle of the flow component is a prior art, so it is not described in detail in this specification.

[0034] As Figure 2 and Figure 7 shown, an inlet joint 8 is installed in the water inlet 101. The inlet joint 8 includes a connecting head 81. A plug 83 is provided at the upper part of the connecting head 81. The plug 83 is inserted into the water inlet 101 and fixed. The plug 83 and the connecting head 81 are eccentrically arranged. Specifically, an inclined hole 84 is provided in the plug 83. The lower end of the inclined hole 84 is inclined towards the central axis of the connecting head 81. By eccentrically arranging the plug 83 and the connecting head 81, during installation, the position of the connecting head 81 can be adjusted by rotating the inlet joint 8, so as to meet the installation requirements in different environments. By providing the inclined hole 84, the opening size at the connection between the plug 83 and the connecting head 81 can be effectively guaranteed, thus meeting the requirement of water inlet flux.

[0035] An installation groove 113 is provided at the lower end of the water inlet 101. A plurality of protrusions 114 are provided on the inner wall of the installation groove 113. A flat gasket 82 is provided at the lower part of the plug 83. A limiting groove 85 corresponding to the protrusion 114 is provided on the side surface of the flat gasket 82. The flat gasket 82 is inserted into the installation groove 113 and the upper part of the flat gasket 82 abuts against the end surface of the installation groove 113. The protrusion 114 is inserted into the corresponding limiting groove 85. Through the cooperation of the protrusion 114 and the limiting groove 85, the limitation between the inlet joint 8 and the valve body 1 can be realized. And by providing the protrusion 114 and the limiting groove 85, the connecting head 81 can be rotated 180 degrees for position adjustment.

[0036] As Figure 2 and Figure 4As shown in the figure, the valve body 1 includes a first water passage 107, a second water passage 108 and a water replenishing passage 109. The first water passage 107 communicates with the first installation cavity 105, the second water passage 108 communicates with the water replenishing passage 109, the water replenishing passage 109 communicates with the water pump interface 104, and the first water passage 107 and the second water passage 108 are connected or blocked by the valve rod 9. Specifically, the valve body 1 further includes a sealing cavity 110 and a second installation cavity 111. The valve rod 9 is installed in the second installation cavity 111. A boss 91 is provided at the upper end of the valve rod 9. The valve rod 9 can move up and down so that the boss 91 can be inserted into or disengaged from the sealing cavity 110. A sealing ring 92 is sleeved on the side surface of the boss 91. The boss 91 and the side wall of the sealing cavity 110 are sealed by the sealing ring 92. When the boss 91 is inserted into the sealing cavity 110, the first water passage 107 and the second water passage 108 are blocked. When the boss 91 is disengaged from the sealing cavity 110, the first water passage 107 and the second water passage 108 are connected. During the circulation of the circulating water in the wall-mounted boiler system, the amount of water will gradually decrease. Therefore, it is necessary to replenish the circulating water. By rotating the valve rod 9, the valve rod 9 rotates and descends, and the first water passage 107, the second water passage 108 and the sealing cavity 110 are connected, so that normal temperature water can be replenished into the water pump interface 104 to realize the replenishment of the circulating water.

[0037] The valve body 1 includes a temperature interface 112, and a temperature sensor 10 is installed in the temperature interface 112. The temperature sensor 10 can detect the temperature of the water flowing into the valve body 1 from the interface 103 of the heat exchanger plate.

[0038] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An inlet valve, comprising a valve body (1), wherein the valve body (1) includes a water inlet (101), a plate heat exchanger lower interface (102), a plate heat exchanger upper interface (103), a water pump interface (104) and a first installation cavity (105), characterized in that, A flow component is installed in the first installation cavity (105). The flow component includes a water outlet (21). An outlet channel (106) is provided inside the valve body (1). The outlet channel (106) is respectively communicated with the water outlet (21) and the heat exchanger lower interface (102). The water inlet (101), the first installation cavity (105), the flow component, the outlet channel (106) and the heat exchanger lower interface (102) form a water inlet path. The heat exchanger upper interface (103) is communicated with the water pump interface (104), and the heat exchanger upper interface (103) and the water pump interface (104) form a water outlet path.

2. The inlet valve according to claim 1, characterized in that, The outlet channel (106) is inclined. The upper end of the outlet channel (106) is communicated with the water outlet (21) and the lower end is communicated with the heat exchanger lower interface (102).

3. The water inlet valve according to claim 1, characterized in that, The flow component includes a housing (2). A filter screen (4) is provided at the lower part of the housing (2). The water outlet (21) is located on the side of the housing (2) and is higher than the filter screen (4). The side wall of the housing (2) is in sealing cooperation with the side wall of the first installation cavity (105). The water outlet (21) is communicated with the water inlet (101) through the filter screen (4).

4. The inlet valve according to claim 3, characterized in that, A fixing seat (3) is installed at the lower part of the housing (2). The filter screen (4) is fixed at the lower part of the fixing seat (3). A current-limiting housing (5) is installed inside the fixing seat (3). A current-limiting ring (6) is installed inside the current-limiting housing (5). An impeller assembly (7) is installed inside the housing (2). The impeller assembly (7) can rotate. The impeller assembly (7) is located above the fixing seat (3). A sensor assembly (22) is clamped on the outside of the housing (2). The sensor assembly (22) is located outside the valve body (1). After passing through the filter screen (4) of the flow component, the water inlet path sequentially passes through the current-limiting ring (6), the impeller assembly (7) and the water outlet (21).

5. The inlet valve according to claim 4, wherein A limiting hole (23) is provided on the side of the housing (2). A convex point (32) corresponding to the limiting hole (23) is provided on the side of the fixing seat (3). The upper part of the fixing seat (3) is inserted into the housing (2). The convex point (32) is inserted into the corresponding limiting hole (23) for limiting. A plurality of buckles (41) are provided on the upper part of the filter screen (4). A notch (31) corresponding to the buckle (41) is provided on the side of the fixing seat (3). The buckle (41) is inserted into the notch (31) for limiting. An annular rib (33) is provided inside the fixing seat (3). The upper part of the current-limiting housing (5) abuts against the lower part of the annular rib (33). The side of the current-limiting ring (6) is tightly fitted with the inner wall of the current-limiting housing (5).

6. The inlet valve according to claim 1, characterized in that, A water inlet joint (8) is installed in the water inlet (101). The water inlet joint (8) includes a connecting head (81). A plug (83) is provided at the upper part of the connecting head (81). The plug (83) is inserted into the water inlet (101) for fixing. The plug (83) is eccentrically arranged with the connecting head (81).

7. The water inlet valve according to claim 6, characterized in that, An inclined hole (84) is provided inside the plug (83). The lower end of the inclined hole (84) is inclined towards the central axis of the connecting head (81).

8. The inlet valve according to claim 6, wherein A mounting groove (113) is provided at the lower end of the water inlet (101). A plurality of protrusions (114) are provided on the inner wall of the mounting groove (113). A flat gasket (82) is provided at the lower part of the plug (83). A limiting groove (85) corresponding to the protrusion (114) is provided on the side surface of the flat gasket (82). The flat gasket (82) is inserted into the mounting groove (113), and the upper part of the flat gasket (82) abuts against the end surface of the mounting groove (113). The protrusion (114) is inserted into the corresponding limiting groove (85).

9. The water inlet valve according to claim 1, wherein The valve body (1) includes a first water passage (107), a second water passage (108) and a water replenishing passage (109). The first water passage (107) communicates with the first installation cavity (105). The second water passage (108) communicates with the water replenishing passage (109). The water replenishing passage (109) communicates with the water pump interface (104). The first water passage (107) and the second water passage (108) are communicated or blocked by the valve rod (9).

10. The inlet valve according to claim 9, characterized in that, The valve body (1) further includes a sealing cavity (110), a second installation cavity (111) and a temperature interface (112). The valve rod (9) is installed in the second installation cavity (111). A boss (91) is provided at the upper end of the valve rod (9). The valve rod (9) can move up and down so that the boss (91) can be inserted into or separated from the sealing cavity (110). A sealing ring (92) is sleeved on the side surface of the boss (91). The boss (91) and the side wall of the sealing cavity (110) are sealed by the sealing ring (92). When the boss (91) is inserted into the sealing cavity (110), the first water passage (107) and the second water passage (108) are blocked. When the boss (91) is separated from the sealing cavity (110), the first water passage (107) and the second water passage (108) are communicated. A temperature sensor (10) is installed in the temperature interface (112).

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